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Siemens 3RT2017-2FB42 Contactor | 12A, 24V DC, Integrated Diode, 1 NC Aux

Siemens 3RT2017-2FB42 3-pole contactor with 24V DC coil and integrated diode.

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ManufacturerSiemens

Part number3RT2017-2FB42

Type AC-3e/AC-3

Current Rating 12A

Power Rating 5.5 kW / 400 V

Poles 3

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AC-3e/AC-3 rating 12A current capacity 24V DC coil Integrated suppressor diode 1 NC auxiliary contact Spring-loaded terminals Size S00

Product description

The Siemens 3RT2017-2FB42 is a 3-pole power contactor for AC-3e/AC-3 duty, rated at 12A and 5.5kW at 400V. This model is equipped with a 24V DC coil, an integrated suppressor diode to protect control circuits from voltage spikes, and one normally closed (NC) auxiliary contact. It utilizes spring-loaded terminals and is housed in a S00 size frame.

This contactor is ideal for applications requiring protection against inductive voltage spikes from the DC coil, such as in automated machinery, control cabinets, and process automation. The integrated diode simplifies wiring and reduces the need for external components.

Stanlo Automation, a veteran-owned surplus distributor, offers the Siemens 3RT2017-2FB42 to provide reliable and cost-effective solutions for your automation needs. We are dedicated to supplying quality surplus parts to keep your operations running seamlessly. Count on Stanlo for your specialized component requirements.

Technical specifications

Type	AC-3e/AC-3
Current Rating	12A
Power Rating	5.5 kW / 400 V
Poles	3
Coil Voltage	24 V DC
Auxiliary Contacts	1 NC
Features	Integrated Diode
Terminal Type	Spring-loaded
Size	S00

Common applications

Motor control

Control systems with DC coils

Automated machinery

Control cabinets

Process automation

Reduced voltage spike protection

Compatible systems

PLC outputs DC control circuits Automation systems requiring coil protection

Also known as

Siemens 3RT2017-2FB42 Diode Contactor 3RT20172FB42 Siemens Siemens 12A DC Contactor with Diode

Replaces / compatible with

This contactor replaces standard 24V DC Siemens contactors in applications where inductive load protection is needed, eliminating the need for external suppressor diodes. Compatible with Siemens 3RT2 series accessories.

Technical note

Expert tip

The integrated suppressor diode in the 3RT2017-2FB42 offers a faster response time for de-energization compared to external diodes, which can be critical in some high-speed control applications.

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Frequently asked questions

What is the purpose of the integrated diode in the Siemens 3RT2017-2FB42?

The integrated suppressor diode in the Siemens 3RT2017-2FB42 protects the control circuitry from harmful voltage spikes generated when the 24V DC coil is de-energized. This enhances the longevity of connected electronic components.